diff --git a/addons/mrp/models/mrp_workorder.py b/addons/mrp/models/mrp_workorder.py
index 1fcc9ca6f47..e1bb869fe3c 100644
--- a/addons/mrp/models/mrp_workorder.py
+++ b/addons/mrp/models/mrp_workorder.py
@@ -886,3 +886,9 @@ class MrpWorkorder(models.Model):
     def action_mass_pause(self):
         for wo in self:
             wo.button_pending()
+
+    def _compute_expected_operation_cost(self):
+        return (self.duration_expected / 60.0) * self.workcenter_id.costs_hour
+
+    def _compute_current_operation_cost(self):
+        return (self.get_duration() / 60.0) * self.workcenter_id.costs_hour
diff --git a/addons/mrp/report/mrp_report_mo_overview.py b/addons/mrp/report/mrp_report_mo_overview.py
index 726234e4437..ed5963a2eec 100644
--- a/addons/mrp/report/mrp_report_mo_overview.py
+++ b/addons/mrp/report/mrp_report_mo_overview.py
@@ -124,8 +124,8 @@ class ReportMoOverview(models.AbstractModel):
         total_current_cost = 0.0
         for index, workorder in enumerate(production.workorder_ids):
             wo_duration = workorder.duration + workorder.get_working_duration()  # Add duration of ongoing work sessions.
-            expected_cost = (workorder.duration_expected / 60.0) * workorder.workcenter_id.costs_hour
-            current_cost = (wo_duration / 60.0) * workorder.workcenter_id.costs_hour
+            expected_cost = workorder._compute_expected_operation_cost()
+            current_cost = workorder._compute_current_operation_cost()
             operations.append({
                 'level': level,
                 'index': f"{current_index}W{index}",